K-Seal ™ HD, Coolant Leak Repair, 16 Oz.

Use K-Seal ™ HD in larger capacity engines as a permanent coolant leak repair. In general, K-Seal can repair holes and cracks up to 1/32 in. in width. Once added to the coolant system, the special formulated sealant with follow your coolant to the leak. The ceramic micro fibers with begin to fill the leak. Once sealed, ambient and internal heat will help cure the K-Seal.